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Hunting
Long Range Hunting & Shooting
Different State - POI Change....is this normal?
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<blockquote data-quote="JDD" data-source="post: 1634019" data-attributes="member: 102774"><p>Thankfully another old school shooter who does t need a cell phone to connect. As you know every rifle and load is a story of its own. We seen a world of advancements in ballistics, bullet profile BC we never could imagine 20 years ago. The old formula accounted for a 2 moa change for temp and air density add back in 1 moa for the competing conditions of attitude . It explains the shift. THE ONLY WAY TO DETERMINE IF IT WAS ENVIRONMENTALS IS TO CHECK ZERO AT HOME RANGE . I Not yelling just typing for notice. If rifle returns to base zero it was environmental, if not could be gear failing to hold up. Depending on barrel profile a change in internal ballistic due to temperature could result in a difference in barrel time and a shift in poi. I just spent two years as a rso and volunteer instructor at a local 1200 yard range. I lost count how many rifles I help set and take out all the way to 1000 yards. Quality gear makes it easier, the electronics make it much easier and requires less math. I gotten spoiled</p></blockquote><p></p>
[QUOTE="JDD, post: 1634019, member: 102774"] Thankfully another old school shooter who does t need a cell phone to connect. As you know every rifle and load is a story of its own. We seen a world of advancements in ballistics, bullet profile BC we never could imagine 20 years ago. The old formula accounted for a 2 moa change for temp and air density add back in 1 moa for the competing conditions of attitude . It explains the shift. THE ONLY WAY TO DETERMINE IF IT WAS ENVIRONMENTALS IS TO CHECK ZERO AT HOME RANGE . I Not yelling just typing for notice. If rifle returns to base zero it was environmental, if not could be gear failing to hold up. Depending on barrel profile a change in internal ballistic due to temperature could result in a difference in barrel time and a shift in poi. I just spent two years as a rso and volunteer instructor at a local 1200 yard range. I lost count how many rifles I help set and take out all the way to 1000 yards. Quality gear makes it easier, the electronics make it much easier and requires less math. I gotten spoiled [/QUOTE]
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Different State - POI Change....is this normal?
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